Motor System Engineering
Currently, motors are used in a variety of locations from industry and transportation to the home, and more than half of all electricity generated in Japan is consumed by motors. Therefore, the improvement of motor efficiency is very effective in reducing energy-related carbon dioxide emissions, and is a very important research topic from the perspective of countermeasures against global warming and the depletion of energy resources. Accordingly, we are conducting research on “high performance motors” and “bearingless motors and magnetic bearings utilizing magnetic levitation” with the aim of “reducing the environmental burden caused by motors.
In the aviation industry, there is a strong demand for electrification of aircraft to reduce fuel consumption as well as environmental burden. For this purpose, it is essential to develop high power density motors that can be installed in aircraft. Therefore, we are conducting research and development of high power density interior permanent magnet synchronous motors with concentrated winding structure by applying rectangular wires.
In recent years, the demand for electric vehicles has increased all over the world, and traction motors with high-performance are strongly required. At the same time, a dramatic increase in production volume is expected, and hence, low-cost mass production is also required. Therefore, in order to achieve both high-performance and low-cost, we are doing research on an axial gap motor employing ferrite magnets and round copper wires.